What happened to linking a single attachment within page text?

[Dan]

Probably the most common task online ever! There is text, and in that text there is a link. That link, links to a single file. Why does the "link" option not include files?

[Nic Brough -Adaptavist-]

I'm not sure it's failing on your version of java, more the config, but I'd try a simple change - use the JRE that's bundled with the Confluence install.

Try setting the java_home to blank and restarting Confluence.  Hopefully it will then pick up the jre that comes with it.  (If not, then try setting it to the jre directory under the Confluence install)